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R. Fahed, A. F. J. Moffat, J. Zorec, T. Eversberg, A. N. Chené, F. Alves, W. Arnold, T. Bergmann, L. F. Gouveia Carreira, F. Marques Dias, A. Fernando, J. Sanchez Gallego, T. Hunger, J. Knapen, R. Leadbeater, T. Morel, G. Rauw, N. Reinecke, J. Ribeiro, N. Romeo, E. M. dos Santos, L. Schanne, O. Stahl, Ba. Stober, Be. Stober, N. G. Correia Viegas, K. Vollmann, M. F. Corcoran, S. M. Dougherty, J. M. Pittard, A. M. T. Pollock & P. M. Williams

Spectroscopic follow-up of the colliding-wind binary WR140 during the 2009 January periastron passage

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Abstract

We present the results from the spectroscopic follow-up of WR140 (WC7 + O4-5) during its last periastron passage in January 2009. This object is known as the archetype of colliding wind binaries and has a relatively large period (around 8 years) and eccentricity (around 0.9). We provide updated values for the orbital parameters, new estimates for the WR and O star masses and new constraints on the mass-loss rates.

To cite this article

R. Fahed, A. F. J. Moffat, J. Zorec, T. Eversberg, A. N. Chené, F. Alves, W. Arnold, T. Bergmann, L. F. Gouveia Carreira, F. Marques Dias, A. Fernando, J. Sanchez Gallego, T. Hunger, J. Knapen, R. Leadbeater, T. Morel, G. Rauw, N. Reinecke, J. Ribeiro, N. Romeo, E. M. dos Santos, L. Schanne, O. Stahl, Ba. Stober, Be. Stober, N. G. Correia Viegas, K. Vollmann, M. F. Corcoran, S. M. Dougherty, J. M. Pittard, A. M. T. Pollock & P. M. Williams, «Spectroscopic follow-up of the colliding-wind binary WR140 during the 2009 January periastron passage», Bulletin de la Société Royale des Sciences de Liège [En ligne], Volume 80 - Année 2011, 668 - 672 URL : https://popups.uliege.be/0037-9565/index.php?id=3133.

About: R. Fahed

Université de Montréal, Montréal, Canada

About: A. F. J. Moffat

Université de Montréal, Montréal, Canada

About: J. Zorec

Institut d’Astrophysique de Paris, Paris, France

About: T. Eversberg

Schnörringen Telescope Science Institute, Köln, Germany

About: A. N. Chené

Herzberg Institute of Astrophysics, Victoria, Canada

About: F. Alves

MONS pro-am collaboration

About: W. Arnold

MONS pro-am collaboration

About: T. Bergmann

MONS pro-am collaboration

About: L. F. Gouveia Carreira

MONS pro-am collaboration

About: F. Marques Dias

MONS pro-am collaboration

About: A. Fernando

MONS pro-am collaboration

About: J. Sanchez Gallego

MONS pro-am collaboration

About: T. Hunger

MONS pro-am collaboration

About: J. Knapen

MONS pro-am collaboration

About: R. Leadbeater

MONS pro-am collaboration

About: T. Morel

MONS pro-am collaboration

About: G. Rauw

MONS pro-am collaboration

About: N. Reinecke

MONS pro-am collaboration

About: J. Ribeiro

MONS pro-am collaboration

About: N. Romeo

MONS pro-am collaboration

About: E. M. dos Santos

MONS pro-am collaboration

About: L. Schanne

MONS pro-am collaboration

About: O. Stahl

MONS pro-am collaboration

About: Ba. Stober

MONS pro-am collaboration

About: Be. Stober

MONS pro-am collaboration

About: N. G. Correia Viegas

MONS pro-am collaboration

About: K. Vollmann

MONS pro-am collaboration